Hide the Eggs!!!

Don't get me wrong....I am very fond of my 3 "girls"...BUT...
for about a week now they have been playing an infuriating game of "hide the eggs"...
somewhere in their pen will be a nest of over a dozenl eggs...but they have hidden them well!!!
My patience is starting to wear thin..and if they are not careful I may be tempted to leave their pen open one evening, and invite the fox in to play !!!!!
Grrrrrrr!!!!!!!